Biosensor



FIG. 1 is a side perspective view of the biosensor;

FIG. 2 is a first side view of the biosensor;

FIG. 3 is a second side view of the biosensor;

FIG. 4 is a first end view of the biosensor;

FIG. 5 is a second end view of the biosensor;

FIG. 6 is a top view of the biosensor; and,

FIG. 7 is a bottom view of the biosensor.

CLAIM The ornamental design for a biosensor, as shown and described.